Jon Arryn

Lord of the Eyrie and Warden of the East, Lord Jon Arryn came to great prominence when he was the first great magnate to rebel against the Mad King, Aerys, when Aerys demanded from him the heads of his two wards, Robert Baratheon and Eddard Stark. He led the Vale to war alongside the young lords, and became Robert’s Hand when he assumed the throne after the Targaryens were overthrown.

Old enough to have been grandfather to a teenaged girl 15 years prior to the start of the series, Jon Arryn is older still at his death, in his late 60s or perhaps even his early 70s.

Differences

The actor cast in the role is approximately 5 to 10 years older than the part described in the novel.